Software Engineer

Janestreet·Londonjunior

In short

→Ingeniero de software que construye sistemas críticos en OCaml y Python para trading y infraestructura.
→Día a día: resolver problemas reales en áreas como riesgo, monitoreo de redes o modelos de trading con enfoque funcional.
→Destacado: se valora más el pensamiento y aprendizaje que conocimientos previos, incluso sin experiencia en OCaml.

Fluent in English

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The questions they'll ask you

1. ¿Cómo abordarías la conversión de un algoritmo imperativo a uno funcional en OCaml?

🔒 +7 more questions

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💵 USD · Remote · No visa

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What they ask for

✓Excelente capacidad para programar
✓Curiosidad intelectual y disposición para aprender
✓Colaboración y humildad
✓Fluidez en inglés
✓Capacidad para resolver problemas complejos
✓Interés en sistemas críticos y software de alto rendimiento

Don't tick every box? That's normal — your free dossier shows your gaps and how to cover them in the interview.

OCamlPythonMercurialOCaml compilerOPAM package managerFunctional programmingStatic typingOpen source contributionsNetwork monitoringRisk models

Who should you write to at Janestreet?

Your free dossier identifies the people who'd interview you — their background, what they value, and how to reach out so you stand out before applying.

About the Position We’re looking for Software Engineers who want to help us design and build the systems and tools that run the firm. You’ll find Software Engineers in all parts of Jane Street, solving real problems in critical areas ranging from trading desks to our accounting team, as well as building foundational infrastructure, whether that means implementing network monitoring or risk models. We are big believers in functional programming and, using OCaml, a statically -typed functional programming language, as our primary tool. More recently, Python has become a vital part of Jane Street’s research and trading work, acting as the go-to language for data analysis, visualization, and machine learning. Beyond our own environment, we also recognize the value of open source software, leveraging it in our daily work and releasing over a million lines of our own code as open source. We’re also always looking for ways to expand open source projects, and provide ongoing support to things like Mercurial, the OCaml compiler, and the OPAM package manager. That said, we’re interested in talented engineers with experience in any language—most of us came in with little to no practical experience in OCaml before we joined. If you’d like to learn more, you can read about our interview process and meet some of our newest hires . About You We don’t expect you to have a background in functional programming, OCaml, Python, finance, or any other specific field—we’re looking for smart programmers who enjoy solving interesting problems. We’re more interested in how you think and learn than what you currently know. You should be: • A top-notch programmer with a love for technology • Intellectually curious, collaborative, and eager to learn • Humble and unafraid to ask questions and admit mistakes • Fluent in English If you'd like to get an idea of what we cover in our software engineering interview process, you can visit our interview prep page . If you're a recruiting agency and want to partner with us, please reach out to ----- Find more English Speaking Jobs in United Kingdom on Arbeitnow

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